Hi Neil, well the update is that I tried using the info on this spreadsheet and I think I finally solved the issues with the flip. The ONLY thing I changed from what's suggested on this spreadsheet is that I switched OFF the "use side of pier" option in NINA, because flips were not reliable when I had this on. Once I switched it off I spent an entire afternoon making flips with my observatory roof closed and they all worked perfectly. However, right after that I started having a new issue which is that when I'm trying to do an imaging session the mount won't slew to a lot of objects, especially around the SCP. So I believe my settings might need some additional tweaking. Here's a couple of screenshots of my settings which seemed to work.
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What issues are you dealing with exactly??